Lifting-jack



- W. o. WILLIAMS.

yLiftiIig--Jawk.`

No. 224,499; wanted Fb; 1o, 1880..

v IzvePZZZ' n nauw Www/ff UNITED STATES 4 PATENT OFFICE.

WILLIAM o. WILLIAMS, oF MARsRALLTowN, IOWA, As'sIeNoR oF THREE- EIeH'rHs oF Ris RIGHT `fro'. BENJAMIN T. FREDERICK AND oNE-EIGRTH To JOHN M. eILcHRIsT; Born oF sAME r-LAoE.`

LlFTlNG-JACK.

sPEcIFIcArIoNfomi-ng part of ,Letters Patent No.224 .,499, `date@rrebmmy 1o, 1880.

Application filed December 12,1879. Y Y

To all whom it may concern Be it known that I, WILLIAM C. WILLIAMS, of Marshalltown, in `the county` of Marshall and State of Iowa, have inventedcertain new and useful Improvements in Lifting-Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art towhich it appertains to make andnse the I that class of lifting-jacks designed for use in making repairs on railroad-tracks; and the principal novelty consists in the construction of the device, whereby it is adapted to be applied readily. and conveniently tothe rail to be operated on, and to aiford means for raising the rail any desired height, from the very least to the full extent ofthe lifting scope, all as will now be more fully set out and eX- plained.

In the drawings, A denotes the body of the jack, within which is iitted and applied the lifting part B. This can be moved up and down in the socket a. of the body A by means of the wheel C operating on thefrscrew-threaded extension' b', which projects up from B through the top part of A. I

On one side of thepart B are notches b. These are designed for the pawl or lever D to engage upon. This pawl is applied through the slot or opening a in the rear side of the body A.

- Upon the lower` end of the lifting part B is the foot b, which projects outwardly from the f part B and through the slot 6 inthe front'of body A. In the upLand-down movement of part B the foot b" will rush in said slot.

In use, it is designed lto place the jack so pawl D it may be lixed or held at the point desired by turning the wheel.

While `the lever or pawl D can be jointed or attached to the body of the jack, it will prob ably be found best to have it separate from it, and, as a longer or shorter one can be u'sed, an ordinary railroad-track or pinch bar can be readily substituted for it.

The extension b of the lifting part B may, if desired, be double-threaded, and its socket in -G also so threaded. This will give some desired advantage in certain instances.

The jack can be easily taken apart, as for packingV or repairs, by screwing'off Wheel C and drawing out the slide a", which covers the bottoni Vof socket a.

The jack is preferably made of metal, and usually of such shape and `size as above exthe very least degree, or to lift it entirely out of place. Y Y

Having thus described my invention, what I consider new, and desire to secure by Let-v ters Patent, is-

1. Ih a lifting-jack, the body A, having socket a, opening a', and slot e, and lift-ing part Bbf, provided with notches b', and adapted to be raised by wheel G and pawl D, substantially as and for the purposes set forth.

2. In a lifting jack, substantially as described, the detachable wheel G and removable slide-cover a", substantially as and for the purpose 'set forth. 3. In a liftingjack, ,substantially as described, the combination of body A with lifting part B, having screw-threaded extension b, notches" b', and foot b", and the wheel C, substantially 'as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 29th day of November, 1879. l

WM. o. WILLIAMS. Y

Witnesses: y

Y B. T. FREDERICK,

J. M. GILcIIRIsT. 

